Adding third-party characters to Smash opened a Pandora’s Box, of sorts, one that has only gotten more and more out of control in the years sense. Brawl is where the crossovers got truly crazy, with characters like Solid Snake and Sonic The Hedgehog making their way into Smash Bros.

It expanded the roster, had incredibly deep and technical gameplay, and became a darling for the competitive scene, a crown it carries to this day. Melee, for Nintendo GameCube, followed a few years later. for Nintendo 64 brought characters from all of Nintendo’s mainline franchises (and a few of their obscure ones) in a nigh-unprecedented gaming crossover event. is a hit game series from Nintendo, known for establishing the platform fighter genre and its nigh unprecedented crossovers.